초록 ▼

A mechanism for adjusting the height and level of a movable boom is disclosed. This mechanism includes a carrier member mountable for vertical pivotal movement about one end thereof, and a first actuator is provided for controlling the movement and position of the carrier member. A unitary member fo

A mechanism for adjusting the height and level of a movable boom is disclosed. This mechanism includes a carrier member mountable for vertical pivotal movement about one end thereof, and a first actuator is provided for controlling the movement and position of the carrier member. A unitary member for supporting the boom in a cantilevered manner is also provided. The unitary support member is connected at the distal end of the carrier member for vertical pivotal movement. Finally, a second actuator is provided for controlling the vertical movement of the support member and boom relative to the carrier member, with the second actuator controlling the vertical level of the boom and the first actuator controlling the vertical height of the boom.

대표청구항 ▼

A mechanism for supporting a boom laterally of a vehicle while permitting said boom to be moved by controls carried on said vehicle to set its position at varied angles relative to the horizontal and also to alter its vertical height without having such height variation movement substantially effect

A mechanism for supporting a boom laterally of a vehicle while permitting said boom to be moved by controls carried on said vehicle to set its position at varied angles relative to the horizontal and also to alter its vertical height without having such height variation movement substantially effect said relative horizontal position setting which comprises: a verticl base member having an upper portion, a lower portion and a first longitudinal web extending therebetween, carrier means having a first proximal end, a first distal end and a second longitudinal web extending therebetween, said carrier means being mounted at said first proximal end on said support member for vertical pivotal movement about a first horizontal axis laterally of said support member, support means having a second proximal end, a second distal end and a third longitudinal web extending therebetween, said support means being connected by said second proximal end to said first distal end for vertical pivotal movement about a second horizontal axis, means on said second distal end by which to mount a boom thereon, a first actuator unit means for controlling the pivotal movement of said carrier means having a first inboard end, a first outboard end and rigid, variable length means connecting said first inboard end to said first outboard end, a second actuator unit means for controlling the pivotal movement of said support means having a second inboard end, a second outboard end and rigid, variable length means connecting said second inboard end to said second outboard end, said first inboard end being mounted for pivotal movement to said first longitudinal web adjacent said upper portion, said first outboard end being mounted for pivotal movement to said second longitudinal web, said second inboard end being mounted for pivotal movement to said first longitudinal web adjacent said lower portion, and said second outboard end being mounted for pivotal movement to said third longitudinal web.